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PGP

PGP. gis90550 陳俊佑. Outline. Introduction How the PGP works An easy example on Linux. Introduction. PGP (short for Pretty Good Privacy), created by Philip Zimmermann, is the standard program for secure e-mail and file encryption on the Internet. It provides digital signature too.

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PGP

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  1. PGP gis90550 陳俊佑

  2. Outline • Introduction • How the PGP works • An easy example on Linux

  3. Introduction • PGP (short for Pretty Good Privacy), created by Philip Zimmermann, is the standard program for secure e-mail and file encryption on the Internet. • It provides digital signature too.

  4. How the PGP works • Conventional Cryptography

  5. How the PGP works • Public Key Cryptography

  6. How the PGP works • PGP Encryption

  7. How the PGP works • PGP decryption

  8. The Steps • 1. Install the PGP [root@SecurePC96 eric]# rpm -iv PGPcmdln_6.5.8_Lnx_FW.rpm • 2. Create Your Keys [eric@SecurePC96 ~]$ pgp –kg …… several questions , just follow the examples. • 3. Publishing Your Public Key -- put it on your Web pages or make it available through a certificate server

  9. The Steps (cont) • 4. Sign a message [eric@SecurePC96 ~]$ pgp -sta message.txt • 5. Recipient Get the Public Key and the Signed message. • 6. Add th public Key & Verify a message [eric@SecurePC94 pgp]$ pgp -ka pgp_eric.txt [eric@SecurePC94 pgp]$ pgp message.txt.asc

  10. Reference sites • www.pgpi.org -- Provides freeware on many platforms • www.gnupg.org

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